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Diamond

is used as th...

Question

___ is used as the lead of a pencil.

A

PbS

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B

Graphite

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C

FeS

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D

Pb

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Solution

The correct option is B
Graphite

Graphite is used as the lead of a pencil. It is grey coloured, opaque but a crystalline substance. It is soft and greasy to touch. On rubbing, graphite makes a black mark on paper so it is called black lead.

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